Mastering Statistics
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Questions and Answers

Why should a formula for a statistic not be provided in common use?

  • It is not necessary to provide a formula for a statistic.
  • It would make the writing more difficult to read and understand.
  • Providing a formula is against writing conventions.
  • Readers are likely to be familiar with the formula already. (correct)

    • When should a formula for a statistic be provided according to the text?

  • When the statistic is new or rare. (correct)
  • When the statistic is common.
  • When the statistic is essential to the paper or article.
  • When the person using the statistic is unfamiliar with it.

    • What is the purpose of providing a formula for a statistic according to the text?

  • To test the reader's knowledge of the formula.
  • To make the writing more difficult to read and understand.
  • To demonstrate the author's expertise in mathematics.
  • To clarify the calculation and usage of the statistic. (correct)

    • Why might a person provide a formula for a statistic even if it is not common according to the text?

    <p>To show that they are using the statistic in a unique way.</p> Signup and view all the answers

    What does the F ratio measure in the context of multilevel data analysis?

    <p>The variability between groups</p> Signup and view all the answers

    In the example given, what does F(2, 177) = 6.30 represent?

    <p>The F ratio for the main effect</p> Signup and view all the answers

    What does the t value measure in the context of multilevel data analysis?

    <p>The significance of the contrast</p> Signup and view all the answers

    In the example given, what does t(177) = 3.51 represent?

    <p>The t value for the contrast</p> Signup and view all the answers

    What does R2 measure in the context of hierarchical and other sequential regression statistics?

    <p>The effect size of the predictor</p> Signup and view all the answers

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